Configuring Ospfv3 Non-Stop Routing (Nsr); Displaying Ospfv3 Information - Brocade Communications Systems FastIron SX 800 Configuration Manual

TABLE 69 OSPFv3 area information fields
Task
Disabling graceful-restart-helper on a device
Enabling graceful-restart-helper on a device
Enabling LSA checking option on the helper
Enabling graceful-restart-helper per VRF
NOTE
Graceful-restart-helper option can be enabled or disabled per
VRF in OSPFv3. If configured outside VRF, then it is
applicable to the default VRF instance of OSPFv3.

Configuring OSPFv3 Non-stop routing (NSR)

In graceful restart, the restarting neighbors need to help build the routing information during the failover, but the graceful restart helper
may not be supported by all devices in a network. Hence to eliminate this dependency, the non-stop routing (NSR) feature is supported
on Brocade devices. NSR does not require support from neighboring devices to perform hitless failover. NSR does not support IPv6-
over-IPv4 tunnel and vitual link, so traffic loss is expected while performing hitless failover.
To enable NSR for OSPFv3, use the nonstop-routing command in the OSPFv6 interface mode.
device(config)# ipv6 router ospf
device(config-ospf6-router)# nonstop-routing
To disable NSR for OSPFv3, use the no form of the nonstop-routing command.
Syntax: [no] nonstop-routing

Displaying OSPFv3 information

You can display the information for the following OSPFv3 parameters:
• Areas
• Link state databases
• Interfaces
• Memory usage
• Neighbors
• Redistributed routes
• Routes
• SPF
• Virtual links
FastIron Ethernet Switch Layer 3 Routing
53-1003627-04
Configuration example
device(config-ospf6-router)#graceful-restart
helper disable
NOTE
Graceful restart for OSPFv3 helper mode is enabled by
default.
device(config-ospf6-router)#no graceful-restart
helper disable
device(config-ospf6-router)#graceful-restart
helper strict-lsa-checking
device(config-ospf6-router-vrf-red)#graceful-
restart helper strict-lsa-checking
Displaying OSPFv3 information
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